I do remember one action that blew - that had a huge dovetail cut across the entire top of the front receiver ring. Different from this the Mk10 action, was that the dovetail was over the threads.

The Mauser and a Japanese action were barreled and chambered for a .270 barreled Improved Magnum case, I assume, the standard 2 1/2" belted magnum case.

A load that gave 'normal pressure & extraction' in the Arisaka action, blew the front ring off the top of the Mauser action.